Weight Converter: mg, g, kg, t, oz, lb, st
Convert any weight between metric and imperial units instantly. Formula shown for every conversion.
This weight converter handles all common units in one place: milligrams, grams, kilograms, metric tons, ounces, pounds, and stones. Enter a value, pick the units, and the converted result updates immediately along with the exact formula used. Useful for cooking, shipping calculations, fitness tracking, or any situation where you need to move between metric and imperial systems. The conversion factor shown lets you verify the math or apply it manually.
Frequently asked questions
How many grams are in a kilogram?
There are exactly 1,000 grams in one kilogram. The prefix 'kilo' means 1,000 in the metric system, so 1 kg = 1,000 g and 1 g = 0.001 kg.
How do you convert pounds to kilograms?
Multiply the number of pounds by 0.45359. For example, 10 lb × 0.45359 = 4.5359 kg. To go the other way, multiply kilograms by 2.20462 to get pounds.
What is a stone in pounds?
One stone is exactly 14 pounds, or approximately 6.35029 kilograms. Stone is used as a unit of body weight primarily in the United Kingdom and Ireland.
How many ounces are in a pound?
There are exactly 16 ounces in one pound. So 1 lb = 16 oz, and 1 oz = 0.0625 lb. One ounce equals approximately 28.3495 grams.
What is the difference between a metric ton and a kilogram?
A metric ton (also called a tonne) equals exactly 1,000 kilograms, or 1,000,000 grams. It is not the same as a US short ton (2,000 lb ≈ 907 kg) or a British long ton (2,240 lb ≈ 1,016 kg).
How many milligrams are in a gram?
There are exactly 1,000 milligrams in one gram. The prefix 'milli' means one-thousandth, so 1 g = 1,000 mg and 1 mg = 0.001 g. Milligrams are commonly used for medication doses and nutritional values.